DragonFly BSD

CVS log for src/sys/dev/disk/isp/isp_freebsd.c

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Revision 1.21: download - view: text, markup, annotated - select for diffs
Sun May 18 20:30:22 2008 UTC (6 years, 3 months ago) by pavalos
Branches: MAIN
CVS tags: HEAD, DragonFly_RELEASE_2_0_Slip, DragonFly_RELEASE_2_0, DragonFly_Preview
Diff to: previous 1.20: preferred, unified
Changes since revision 1.20: +2 -2 lines
Sync CAM with FreeBSD using lockmgr locks instead of mutexes.
Note:  This is mostly a code sync with FreeBSD which improves stability
in addition to the items listed below.  This provides a framework for
releasing the mplock, but for now it's still there.

Add an xpt_print function to reduce most of the xpt_print_path/printf
pairs. Convert the core code to use it.

Initial cut at Basic Domain Validation.

Make cam_xpt's pronouncements match camcontrol (Tagged -> Command) Queueing.

Pay attention to return value from xpt_bus_register in xpt_init.

Add an xpt_rescan function and a thread that will field rescan requests.
The purpose of this is to allow a SIM (or other entities) to request a bus
rescan and have it then fielded in a different (process) context from the
caller.

Check the return value from cam_periph_acquire.

Drop the periph/sim lock when calling disk_destroy().

Drop the topology lock before calling the periph oninvalidate and dtor
vectors.

For the XPT_SASYNC_CB operation, only decouple the broadcast to the bus
and device lists instead of decoupling the whole operation.  This avoids
problems with SIMs going away.

Split the camisr into per-SIM done queues.  This optimizes the locking a
little bit and allows for direct dispatch of the doneq from certain
contexts that would otherwise face recursive locking problems.

Zero the CCBs when mallocing them.

Only schedule the xpt_finishconfig_task once.

Eliminate the use of M_TEMP.

Add a helper function for registering async callbacks.

Release the bus reference that is acquired when doing a CAMIOCOMMAND ioctl.

Zero scsi_readcapacity allocations so we can really tell if there has
been data returned.

Remove duplicate includes and fix typos.

Add a bunch of definitions and structures to support newer drivers.

When probing a newly found device, don't automatically assume that the
device supports retrieving a serial number.  Instead, first query the
list of VPD pages it does support, and only query the serial number if
it's supported, else silently move on.  This eliminates a lot of noise
during verbose booting, and will likely eliminate the need for most
NOSERIAL quirks.

Reduce diffs from FreeBSD.

Obtained-from: FreeBSD

Revision 1.20: download - view: text, markup, annotated - select for diffs
Sun Feb 10 00:01:02 2008 UTC (6 years, 6 months ago) by pavalos
Branches: MAIN
CVS tags: DragonFly_RELEASE_1_12_Slip, DragonFly_RELEASE_1_12
Diff to: previous 1.19: preferred, unified
Changes since revision 1.19: +0 -138 lines
Make CAM_NEW_TRAN_CODE default.

As previously mentioned, this makes a huge performance difference for one
of my disks, and future work depends on this change.

Obtained-from: FreeBSD

Revision 1.19: download - view: text, markup, annotated - select for diffs
Mon Jan 21 07:21:28 2008 UTC (6 years, 7 months ago) by pavalos
Branches: MAIN
Diff to: previous 1.18: preferred, unified
Changes since revision 1.18: +187 -0 lines
CAM_NEW_TRAN_CODE fixes.

Obtained-from: FreeBSD

Revision 1.18: download - view: text, markup, annotated - select for diffs
Fri Dec 22 23:26:16 2006 UTC (7 years, 8 months ago) by swildner
Branches: MAIN
CVS tags: DragonFly_RELEASE_1_8_Slip, DragonFly_RELEASE_1_8, DragonFly_RELEASE_1_10_Slip, DragonFly_RELEASE_1_10
Diff to: previous 1.17: preferred, unified
Changes since revision 1.17: +4 -4 lines
Rename printf -> kprintf in sys/ and add some defines where necessary
(files which are used in userland, too).

Revision 1.17: download - view: text, markup, annotated - select for diffs
Mon Dec 18 20:41:01 2006 UTC (7 years, 8 months ago) by dillon
Branches: MAIN
Diff to: previous 1.16: preferred, unified
Changes since revision 1.16: +1 -1 lines
Rename kvprintf  -> kvcprintf (call-back version)
Rename vprintf   -> kvprintf
Rename vsprintf  -> kvsprintf
Rename vsnprintf -> kvsnprintf

Revision 1.16: download - view: text, markup, annotated - select for diffs
Sun Sep 10 01:26:33 2006 UTC (7 years, 11 months ago) by dillon
Branches: MAIN
Diff to: previous 1.15: preferred, unified
Changes since revision 1.15: +1 -1 lines
Change the kernel dev_t, representing a pointer to a specinfo structure,
to cdev_t.  Change struct specinfo to struct cdev.  The name 'cdev' was taken
from FreeBSD.  Remove the dev_t shim for the kernel.

This commit generally removes the overloading of 'dev_t' between userland and
the kernel.

Also fix a bug in libkvm where a kernel dev_t (now cdev_t) was not being
properly converted to a userland dev_t.

Revision 1.15: download - view: text, markup, annotated - select for diffs
Tue Sep 5 00:55:37 2006 UTC (7 years, 11 months ago) by dillon
Branches: MAIN
Diff to: previous 1.14: preferred, unified
Changes since revision 1.14: +3 -3 lines
Rename malloc->kmalloc, free->kfree, and realloc->krealloc.  Pass 1

Revision 1.14: download - view: text, markup, annotated - select for diffs
Fri Jul 28 02:17:35 2006 UTC (8 years, 1 month ago) by dillon
Branches: MAIN
Diff to: previous 1.13: preferred, unified
Changes since revision 1.13: +21 -31 lines
MASSIVE reorganization of the device operations vector.  Change cdevsw
to dev_ops.  dev_ops is a syslink-compatible operations vector structure
similar to the vop_ops structure used by vnodes.

Remove a huge number of instances where a thread pointer is still being
passed as an argument to various device ops and other related routines.
The device OPEN and IOCTL calls now take a ucred instead of a thread pointer,
and the CLOSE call no longer takes a thread pointer.

Revision 1.13: download - view: text, markup, annotated - select for diffs
Mon Jun 6 22:51:54 2005 UTC (9 years, 2 months ago) by corecode
Branches: MAIN
CVS tags: DragonFly_RELEASE_1_6_Slip, DragonFly_RELEASE_1_6, DragonFly_RELEASE_1_4_Slip, DragonFly_RELEASE_1_4
Diff to: previous 1.12: preferred, unified
Changes since revision 1.12: +3 -4 lines
convert spl* to critical sections

Revision 1.12: download - view: text, markup, annotated - select for diffs
Fri Feb 4 02:55:43 2005 UTC (9 years, 6 months ago) by dillon
Branches: MAIN
CVS tags: DragonFly_Stable, DragonFly_RELEASE_1_2_Slip, DragonFly_RELEASE_1_2
Diff to: previous 1.11: preferred, unified
Changes since revision 1.11: +1 -0 lines
One of the last things the system does before it tries to mount root is
wait for interrupt-driven configuration hooks to finish.  This is one of
the common places where the system locks up due to e.g. blown interrupt
routing.

Wait up to 60 seconds for interrupt driven hooks to complete.  Generate
a warning every 10 seconds listing the hooks that have not yet completed.
Name all the hook structures to make the listing meaningful.  After 60
seconds, give up and continue booting.  The system might actually
be useable enough to aid in debugging depending on which device failed.

Revision 1.11: download - view: text, markup, annotated - select for diffs
Fri Sep 17 03:39:39 2004 UTC (9 years, 11 months ago) by joerg
Branches: MAIN
CVS tags: DragonFly_Snap29Sep2004
Diff to: previous 1.10: preferred, unified
Changes since revision 1.10: +5 -6 lines
timeout/untimeout ==> callout_*

Revision 1.10: download - view: text, markup, annotated - select for diffs
Wed May 19 22:52:41 2004 UTC (10 years, 3 months ago) by dillon
Branches: MAIN
CVS tags: DragonFly_Snap13Sep2004, DragonFly_1_0_REL, DragonFly_1_0_RC1, DragonFly_1_0A_REL
Diff to: previous 1.9: preferred, unified
Changes since revision 1.9: +2 -1 lines
Device layer rollup commit.

* cdevsw_add() is now required.  cdevsw_add() and cdevsw_remove() may specify
  a mask/match indicating the range of supported minor numbers.  Multiple
  cdevsw_add()'s using the same major number, but distinctly different
  ranges, may be issued.  All devices that failed to call cdevsw_add() before
  now do.

* cdevsw_remove() now automatically marks all devices within its supported
  range as being destroyed.

* vnode->v_rdev is no longer resolved when the vnode is created.  Instead,
  only v_udev (a newly added field) is resolved.  v_rdev is resolved when
  the vnode is opened and cleared on the last close.

* A great deal of code was making rather dubious assumptions with regards
  to the validity of devices associated with vnodes, primarily due to
  the persistence of a device structure due to being indexed by (major, minor)
  instead of by (cdevsw, major, minor).  In particular, if you run a program
  which connects to a USB device and then you pull the USB device and plug
  it back in, the vnode subsystem will continue to believe that the device
  is open when, in fact, it isn't (because it was destroyed and recreated).

  In particular, note that all the VFS mount procedures now check devices
  via v_udev instead of v_rdev prior to calling VOP_OPEN(), since v_rdev
  is NULL prior to the first open.

* The disk layer's device interaction has been rewritten.  The disk layer
  (i.e. the slice and disklabel management layer) no longer overloads
  its data onto the device structure representing the underlying physical
  disk.  Instead, the disk layer uses the new cdevsw_add() functionality
  to register its own cdevsw using the underlying device's major number,
  and simply does NOT register the underlying device's cdevsw.  No
  confusion is created because the device hash is now based on
  (cdevsw,major,minor) rather then (major,minor).

  NOTE: This also means that underlying raw disk devices may use the entire
  device minor number instead of having to reserve the bits used by the disk
  layer, and also means that can we (theoretically) stack a fully
  disklabel-supported 'disk' on top of any block device.

* The new reference counting scheme prevents this by associating a device
  with a cdevsw and disconnecting the device from its cdevsw when the cdevsw
  is removed.  Additionally, all udev2dev() lookups run through the cdevsw
  mask/match and only successfully find devices still associated with an
  active cdevsw.

* Major work on MFS:  MFS no longer shortcuts vnode and device creation.  It
  now creates a real vnode and a real device and implements real open and
  close VOPs.  Additionally, due to the disk layer changes, MFS is no longer
  limited to 255 mounts.  The new limit is 16 million.  Since MFS creates a
  real device node, mount_mfs will now create a real /dev/mfs<PID> device
  that can be read from userland (e.g. so you can dump an MFS filesystem).

* BUF AND DEVICE STRATEGY changes.  The struct buf contains a b_dev field.
  In order to properly handle stacked devices we now require that the b_dev
  field be initialized before the device strategy routine is called.  This
  required some additional work in various VFS implementations.  To enforce
  this requirement, biodone() now sets b_dev to NODEV.  The new disk layer
  will adjust b_dev before forwarding a request to the actual physical
  device.

* A bug in the ISO CD boot sequence which resulted in a panic has been fixed.

Testing by: lots of people, but David Rhodus found the most aggregious bugs.

Revision 1.9: download - view: text, markup, annotated - select for diffs
Thu May 13 23:49:15 2004 UTC (10 years, 3 months ago) by dillon
Branches: MAIN
Diff to: previous 1.8: preferred, unified
Changes since revision 1.8: +1 -1 lines
device switch 1/many: Remove d_autoq, add d_clone (where d_autoq was).

d_autoq was used to allow the device port dispatch to mix old-style synchronous
calls with new style messaging calls within a particular device.  It was never
used for that purpose.

d_clone will be more fully implemented as work continues.  We are going to
install d_port in the dev_t (struct specinfo) structure itself and d_clone
will be needed to allow devices to 'revector' the port on a minor-number
by minor-number basis, in particular allowing minor numbers to be directly
dispatched to distinct threads.  This is something we will be needing later
on.

Revision 1.8: download - view: text, markup, annotated - select for diffs
Mon Mar 15 01:10:43 2004 UTC (10 years, 5 months ago) by dillon
Branches: MAIN
Diff to: previous 1.7: preferred, unified
Changes since revision 1.7: +8 -13 lines
The cam_sim structure was being deallocated unconditionally by device
driver detach routines.  The problem with this is that part of the CAM
bus structure may still be active (for example, with pending timeout()'s),
and even though the bus, target, and device is freed, since the sim IS
freed any accesses through the sim will hit 0xdeadc0de.  This case most often
occurs with USB UMASS devices.

The CAM_XPT and CAM_SIM layer has been revamped.  CAM_DEV_UNCONFIGURED is now
accounted for in the device->refcount, and the cam_sim structure is now
ref-counted as well.  Additionally, the cam_simq* code which handles the
device queues has been revamped to refcount as well, so shared device queues
(raid and multi-channel devices) are not free()'d before all references have
gone away.

scsi_low free'd its cam_sim twice.  Fixed.

USB was improperly using M_NOWAIT.  All M_NOWAIT instances have been renamed
to M_INTWAIT.

Revision 1.7: download - view: text, markup, annotated - select for diffs
Sun Nov 9 02:22:34 2003 UTC (10 years, 9 months ago) by dillon
Branches: MAIN
Diff to: previous 1.6: preferred, unified
Changes since revision 1.6: +3 -3 lines
Core integer types header file reorganization stage 1/2: Create and/or modify
intttypes.h and stdint.h plus the opaque underlying support in sys/ and
machine/ according to the OpenGroup specifications.

These changes are loosely based on FreeBSD-5 but use far saner type names
and include dependancies.

Revision 1.6: download - view: text, markup, annotated - select for diffs
Thu Aug 7 21:16:52 2003 UTC (11 years ago) by dillon
Branches: MAIN
Diff to: previous 1.5: preferred, unified
Changes since revision 1.5: +2 -2 lines
kernel tree reorganization stage 1: Major cvs repository work (not logged as
commits) plus a major reworking of the #include's to accomodate the
relocations.

    * CVS repository files manually moved.  Old directories left intact
      and empty (temporary).

    * Reorganize all filesystems into vfs/, most devices into dev/,
      sub-divide devices by function.

    * Begin to move device-specific architecture files to the device
      subdirs rather then throwing them all into, e.g. i386/include

    * Reorganize files related to system busses, placing the related code
      in a new bus/ directory.  Also move cam to bus/cam though this may
      not have been the best idea in retrospect.

    * Reorganize emulation code and place it in a new emulation/ directory.

    * Remove the -I- compiler option in order to allow #include file
      localization, rename all config generated X.h files to use_X.h to
      clean up the conflicts.

    * Remove /usr/src/include (or /usr/include) dependancies during the
      kernel build, beyond what is normally needed to compile helper
      programs.

    * Make config create 'machine' softlinks for architecture specific
      directories outside of the standard <arch>/include.

    * Bump the config rev.

    WARNING! after this commit /usr/include and /usr/src/sys/compile/*
    should be regenerated from scratch.

Revision 1.5: download - view: text, markup, annotated - select for diffs
Mon Jul 21 05:50:31 2003 UTC (11 years, 1 month ago) by dillon
Branches: MAIN
Diff to: previous 1.4: preferred, unified
Changes since revision 1.4: +7 -4 lines
DEV messaging stage 1/4: Rearrange struct cdevsw and add a message port
and auto-queueing mask.  The mask will tell us which message functions
can be safely queued to another thread and which still need to run in the
context of the caller.   Primary configuration fields (name, cmaj, flags,
port, autoq mask) are now at the head of the structure.  Function vectors,
which may eventually go away, are at the end.  The port and autoq fields
are non-functional in this stage.

The old BDEV device major number support has also been removed from cdevsw,
and code has been added to translate the bootdev passed from the boot code
(the boot code has always passed the now defunct block device major numbers
and we obviously need to keep that compatibility intact).

Revision 1.4: download - view: text, markup, annotated - select for diffs
Sat Jul 19 21:14:23 2003 UTC (11 years, 1 month ago) by dillon
Branches: MAIN
Diff to: previous 1.3: preferred, unified
Changes since revision 1.3: +5 -6 lines
Remove the priority part of the priority|flags argument to tsleep().  Only
flags are passed now.  The priority was a user scheduler thingy that is not
used by the LWKT subsystem.  For process statistics assume sleeps without
P_SINTR set to be disk-waits, and sleeps with it set to be normal sleeps.

This commit should not contain any operational changes.

Revision 1.3: download - view: text, markup, annotated - select for diffs
Mon Jun 23 17:55:31 2003 UTC (11 years, 2 months ago) by dillon
Branches: MAIN
CVS tags: PRE_MP
Diff to: previous 1.2: preferred, unified
Changes since revision 1.2: +6 -6 lines
proc->thread stage 2: MAJOR revamping of system calls, ucred, jail API,
and some work on the low level device interface (proc arg -> thread arg).
As -current did, I have removed p_cred and incorporated its functions
into p_ucred.  p_prison has also been moved into p_ucred and adjusted
accordingly.  The jail interface tests now uses ucreds rather then processes.

The syscall(p,uap) interface has been changed to just (uap).  This is inclusive
of the emulation code.  It makes little sense to pass a proc pointer around
which confuses the MP readability of the code, because most system call code
will only work with the current process anyway.  Note that eventually
*ALL* syscall emulation code will be moved to a kernel-protected userland
layer because it really makes no sense whatsoever to implement these
emulations in the kernel.

suser() now takes no arguments and only operates with the current process.
The process argument has been removed from suser_xxx() so it now just takes
a ucred and flags.

The sysctl interface was adjusted somewhat.

Revision 1.2: download - view: text, markup, annotated - select for diffs
Tue Jun 17 04:28:27 2003 UTC (11 years, 2 months ago) by dillon
Branches: MAIN
Diff to: previous 1.1: preferred, unified
Changes since revision 1.1: +1 -0 lines
Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids.  Most
ids have been removed from !lint sections and moved into comment sections.

Revision 1.1: download - view: text, markup, annotated - select for diffs
Tue Jun 17 02:54:16 2003 UTC (11 years, 2 months ago) by dillon
Branches: MAIN
CVS tags: FREEBSD_4_FORK
import from FreeBSD RELENG_4 1.32.2.20

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